CN109640155B - Image processing method based on backlight adjustment, smart television and storage medium - Google Patents
Image processing method based on backlight adjustment, smart television and storage medium Download PDFInfo
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- CN109640155B CN109640155B CN201811569287.4A CN201811569287A CN109640155B CN 109640155 B CN109640155 B CN 109640155B CN 201811569287 A CN201811569287 A CN 201811569287A CN 109640155 B CN109640155 B CN 109640155B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
- H04N21/44008—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving operations for analysing video streams, e.g. detecting features or characteristics in the video stream
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
- H04N21/4318—Generation of visual interfaces for content selection or interaction; Content or additional data rendering by altering the content in the rendering process, e.g. blanking, blurring or masking an image region
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/485—End-user interface for client configuration
- H04N21/4854—End-user interface for client configuration for modifying image parameters, e.g. image brightness, contrast
Abstract
The invention discloses an image processing method based on backlight adjustment, a smart television and a storage medium, wherein the method comprises the following steps: acquiring and playing a dolby visual field video source, analyzing attribute parameters of the dolby visual field video source through a driving module, and judging whether preset parameters for realizing global light control exist or not; when the preset parameters exist, judging whether a preset switch is turned on, and mapping the preset parameters with a preset gray scale value when the preset switch is turned on; and mapping the mapped gray scale data and the PWM dimming duty ratio, and setting a backlight value as the mapped PWM dimming duty ratio. The invention ensures that the change of the backlight is smooth transition by establishing the relation between the Dolby View video source and the television backlight, controls the television backlight to change in real time according to the corresponding relation when the parameter of the Dolby View video source changes, realizes the effect of dynamically adjusting the backlight according to different pictures of a film source, and improves the playing effect of video images.
Description
Technical Field
The invention relates to the technical field of smart televisions, in particular to an image processing method based on backlight adjustment, a smart television and a storage medium.
Background
Dolby vision (which improves the image quality by improving the brightness and expanding the dynamic range) is a technique proposed by dolby laboratories in the united states to improve the image quality of video signals, and has recently become widespread in China. The whole process from video production to display improves the brightness and expands the dynamic range, reserves rich color pixels, restores a picture with more layering sense and accordingly shows a better image effect. At present, more and more players support decoding playing of Dolby Vision, and online video service providers also provide more and more Dolby Vision film sources for users to select. In the field of television application, the Dolby Vision technology needs to be realized by combining a film source with software and hardware of a television, an LED television screen which is mainstream in the market is mainly made of liquid crystal materials and is composed of pixel units which are regularly arranged in a horizontal and vertical mode, an image is formed by controlling pixels through voltage, but the LED television screen cannot emit light by virtue of an external backlight source, so that the backlight of the LED television screen is kept unchanged no matter a brighter or darker image is played, a black picture cannot be blacked, the Dolby Vision technology is not beneficial to reducing power consumption, and the image effect cannot be further improved on the television level.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
The invention aims to solve the technical problem that the image processing method based on backlight adjustment, the intelligent television and the storage medium aim to ensure that the backlight change is in smooth transition by establishing the relation between a Dolby view video source and the television backlight, and when the Dolby view video source parameter changes, the television backlight is controlled to change in real time according to the corresponding relation, so that the effect of dynamically adjusting the backlight according to different pictures of a film source is realized, and the playing effect of a video image is improved.
The technical scheme adopted by the invention for solving the technical problem is as follows:
an image processing method based on backlight adjustment, wherein the image processing method based on backlight adjustment comprises the following steps:
acquiring and playing a dolby visual field video source, analyzing attribute parameters of the dolby visual field video source through a driving module, and judging whether preset parameters for realizing global light control exist or not;
when the preset parameters exist, judging whether a preset switch is turned on, and mapping the preset parameters with a preset gray scale value when the preset switch is turned on;
and mapping the mapped gray scale data and the PWM dimming duty ratio, and setting a backlight value as the mapped PWM dimming duty ratio.
The image processing method based on backlight adjustment, wherein the acquiring and playing the dolby view video source, analyzing the attribute parameters of the dolby view video source through the driving module, and judging whether the preset parameters for realizing global light control exist further comprises:
and when the preset parameters for realizing the global light control in the attribute parameters are separated, and the preset parameters do not exist, the backlight is not readjusted.
The image processing method based on backlight adjustment, wherein when the preset parameter exists, whether a preset switch is turned on is judged, and when the preset switch turns on and suggests, mapping the preset parameter and a preset gray scale value further comprises:
and when the preset parameter exists and the preset switch is judged to be in the closed state, the backlight is not readjusted.
The image processing method based on backlight adjustment is characterized in that the preset gray-scale value is a 256-bit gray-scale value.
The image processing method based on backlight adjustment, wherein the acquiring and playing the dolby view video source, analyzing the attribute parameters of the dolby view video source through the driving module, and judging whether the preset parameters for realizing global light control exist specifically comprises:
acquiring a dolby video source in a resource database through a player, and starting to play the dolby video source;
analyzing the Dewar chart video source to obtain attribute parameters through a driving module, and judging whether preset parameters for realizing global light control exist or not;
and when the preset parameters exist, separating the preset parameters from the attribute parameters.
The image processing method based on backlight adjustment, wherein when the preset parameter exists, whether a preset switch is turned on is judged, and when the preset switch is turned on, before mapping the preset parameter with a preset gray scale value, the method further comprises:
a preset switch for judging whether the backlight parameters need to be readjusted is preset.
The image processing method based on backlight adjustment, wherein when the preset parameter exists, judging whether a preset switch is turned on, and when the preset switch is turned on, mapping the preset parameter and a preset gray scale value specifically includes:
judging whether the preset switch is in an on state or not after the preset parameter exists and is separated from the attribute parameter;
and when the preset switch is in an on state, performing first mapping processing on the preset parameters and the 256-bit gray scale values.
The image processing method based on backlight adjustment, wherein the mapping the mapped gray-scale data and the PWM dimming duty cycle, and setting the backlight value as the mapped PWM dimming duty cycle specifically includes:
carrying out second mapping processing on the 256-bit gray scale data subjected to the first mapping processing and the PWM dimming duty ratio;
and setting the backlight value as the PWM dimming duty ratio after the second mapping processing.
An intelligent television, wherein the intelligent television comprises: a memory, a processor and an image processing program based on backlight adjustment stored on the memory and executable on the processor, the image processing program based on backlight adjustment realizing the steps of the image processing method based on backlight adjustment as described above when executed by the processor.
A storage medium, wherein the storage medium stores a backlight adjustment-based image processing program, which when executed by a processor implements the steps of the backlight adjustment-based image processing method as described above.
The invention discloses an image processing method based on backlight adjustment, a smart television and a storage medium, wherein the method comprises the following steps: acquiring and playing a dolby visual field video source, analyzing attribute parameters of the dolby visual field video source through a driving module, and judging whether preset parameters for realizing global light control exist or not; when the preset parameters exist, judging whether a preset switch is turned on, and mapping the preset parameters with a preset gray scale value when the preset switch is turned on; and mapping the mapped gray scale data and the PWM dimming duty ratio, and setting a backlight value as the mapped PWM dimming duty ratio. The invention ensures that the change of the backlight is smooth transition by establishing the relation between the Dolby View video source and the television backlight, controls the television backlight to change in real time according to the corresponding relation when the parameter of the Dolby View video source changes, realizes the effect of dynamically adjusting the backlight according to different pictures of a film source, and improves the playing effect of video images.
Drawings
FIG. 1 is a flow chart of an image processing method based on backlight adjustment according to a preferred embodiment of the present invention;
FIG. 2 is a flowchart of step S10 in the preferred embodiment of the image processing method based on backlight adjustment according to the present invention;
FIG. 3 is a flowchart of step S20 in the preferred embodiment of the image processing method based on backlight adjustment according to the present invention;
FIG. 4 is a flowchart of step S30 in the preferred embodiment of the image processing method based on backlight adjustment according to the present invention;
fig. 5 is a schematic operating environment diagram of a smart tv according to a preferred embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, the image processing method based on backlight adjustment according to the preferred embodiment of the present invention includes the following steps:
and step S10, acquiring and playing the Dolby view video source, analyzing the attribute parameters of the Dolby view video source through the driving module, and judging whether preset parameters for realizing global light control exist.
Please refer to fig. 2, which is a flowchart of step S10 in the image processing method based on backlight adjustment according to the present invention.
As shown in fig. 2, the step S10 includes:
s11, acquiring a dolby view video source in a resource database through a player, and starting to play the dolby view video source;
s12, analyzing the Dolby view video source to obtain attribute parameters through a driving module, and judging whether preset parameters for realizing global light control exist or not;
and S13, separating the preset parameters from the attribute parameters when the preset parameters exist.
Specifically, the Dolby view video source is a video resource based on Dolby Vision, and is a video that enhances the image effect by enhancing the brightness and expanding the dynamic range, so that the image of the video is very vivid from the perspective of brightness, color, or contrast.
Since the parameters of the Dolby Vision source are constantly changed during the playing process (that is, the parameters of the Dolby Vision source are changed according to different pictures during the playing process), the backlight needs to be dynamically adjusted according to different pictures of the Dolby Vision source, so as to achieve a better viewing effect.
The method comprises the steps of obtaining a Dolby Vision film source and playing the Dolby Vision film source, analyzing a DM metadata parameter (the attribute parameter of the Dolby Vision film source is called as DM metadata) by a Dolby Driver (a driving module), separating GD metadata (namely a preset parameter for realizing global light control attribute parameters), and when the parameter does not exist, resetting the backlight, namely separating the preset parameter for realizing global light control in the attribute parameters, and when judging that the preset parameter does not exist, resetting the backlight.
And step S20, when the preset parameters exist, judging whether a preset switch is turned on, and when the preset switch is turned on, mapping the preset parameters and preset gray scale values.
Please refer to fig. 3, which is a flowchart of step S20 in the image processing method based on backlight adjustment according to the present invention.
As shown in fig. 3, the step S20 includes:
s21, judging whether the preset switch is in an on state or not when the preset parameters exist and are separated from the attribute parameters;
and S22, when the preset switch is in an on state, performing first mapping processing on the preset parameter and the 256-bit gray scale value.
Specifically, the preset gray scale value is a 256-bit gray scale value; a preset switch for judging whether backlight parameters need to be readjusted (set) is preset, and when GD metadata is separated and the preset switch is judged to be in an on state, the preset parameter and the 256-bit gray level value are subjected to first mapping (mapping refers to the relationship that elements between two sets of elements are mutually corresponding).
The brightness level of the image can be represented by 256-bit gray levels, so-called gray levels, which are the brightness variation between the brightest level and the darkest level divided into a plurality of portions so as to control the screen brightness corresponding to the signal input, each digital image is formed by combining a plurality of points, which are also called pixels (pixels), each pixel can usually present a plurality of different colors, which are formed by three sub-pixels of red, green and blue (RGB), each sub-pixel can display different brightness levels of the light source behind the sub-pixel, the gray levels represent the gradation levels of different brightness from the darkest level to the brightest level, and the more intermediate levels, the more exquisite the picture effect can be presented. Taking 8bit panel as an example, the 8 th power of 2 can be expressed, which is equal to 256 brightness levels, and is called 256 gray levels.
Further, when the preset parameter exists and the preset switch is judged to be in the off state, the backlight is not readjusted, and the fact that the preset switch is turned off means that the backlight does not need to be set.
And step S30, mapping the mapped gray scale data and the PWM dimming duty ratio, and setting the backlight value as the mapped PWM dimming duty ratio.
Please refer to fig. 4, which is a flowchart of step S30 in the image processing method based on backlight adjustment according to the present invention.
As shown in fig. 4, the step S30 includes:
s31, carrying out secondary mapping processing on the 256-bit gray scale data subjected to the primary mapping processing and the PWM dimming duty ratio;
and S32, setting the backlight value as the PWM dimming duty ratio after the second mapping processing.
Specifically, the current television adopts PWM duty cycle dimming, the control of the backlight of the television is PWM signals, and the adjustment of the backlight of the television is the adjustment of the duty cycle of the PWM signals (i.e., PWM dimming duty cycle, PWM, Pulse Width Modulation, which is a very effective technique for controlling an analog circuit by using the digital output of a microprocessor, and is widely applied in many fields from measurement, communication to power control and conversion).
Therefore, after the 256-bit gray scale data subjected to the first mapping processing and the PWM dimming duty ratio are subjected to the second mapping processing, the backlight value is set to be the PWM dimming duty ratio subjected to the second mapping processing, and the purpose of dynamically adjusting the backlight according to different pictures is achieved.
Further, in order to explain the technical solution of the present invention more clearly, the following description is specifically made:
and playing a DolbyVision film source, wherein the DM metadata of each frame of the film source comprises GD metadata (the variation range is 0-4096), the front section image of the GD metadata keeps 0 unchanged, the middle section image keeps 4096 unchanged, and the rear section image restores to 0 and keeps unchanged.
At present, a television adopts PWM duty ratio dimming, after a 256-bit gray-scale value is obtained, when a Dolby Vision film source plays, a Dolby Driver analyzes DM metadata of the film source to obtain a GD metadata parameter. Then establishing mapping between GD metadata and 256-bit gray-scale values, wherein the adopted method is as follows: the adjusting range of the backlight adjusting UI of the television is 0-100, the step length is 1, 5 points 0, 25, 50, 75 and 100 are respectively taken, the corresponding actual brightness is measured by an instrument and is represented by Lum0, Lum1, Lum2, Lum3 and Lum4, the 256-bit gray-scale values corresponding to the 5 points are 0, 64, 128, 192 and 255, namely the 5 sampling point gray-scale values correspond to 5 actual brightness values, and therefore the Dolby Driver outputs the 256-bit gray-scale value corresponding to the GD metada according to the setting.
A mapping relation is established between the PWM and the duty ratio, a linear relation is established between the PWM and the duty ratio, and the expression is as follows:
GD_PWM＝(Distance Y*Backlight_255/Distance X)+Intercept；
wherein, Distance X and Distance Y are coefficients, and the coefficient of the linear expression is as follows:
DistanceY＝ucY1-ucY0
DistanceX＝ucX1-ucX0
Intercept＝ucY0；
the coefficient of the linear expression is calculated by the following method:
when Backlight _255< ═ 64,
ucY0＝PWM_V0
ucY1＝PWM_V64
ucX0＝0
ucX1＝64；
when Backlight _255< ═ 128,
ucY0＝PWM_V64
ucY1＝PWM_V128
ucX0＝64
ucX1＝128；
when Backlight _255< ═ 192,
ucY0＝PWM_V128
ucY1＝PWM_V192
ucX0＝128
ucX1＝192；
when Backlight _255< ═ 255,
ucY0＝PWM_V192
ucY1＝PWM_V255
ucX0＝192
ucX1＝255；
the PWM _ V0, PWM _ V64, PWM _ V128, PWM _ V192 and PWM _ V255 are PWM duty ratios corresponding to 0, 25, 50, 75 and 100 in the backlight UI, and 0, 64, 128, 192 and 255 take 5 values for the 256-bit gray-scale values.
The value calculated according to the above expression is the set backlight value.
The invention establishes the relation between the Dolby Vision film source and the television backlight, ensures that the backlight change is smooth and unobtrusive, and when the film source parameter changes, the backlight change is real-time and keeps synchronous, thereby providing a new direction for improving the image effect.
As shown in fig. 5, based on the image processing method based on backlight adjustment, the present invention further provides a smart television, where the smart television includes a processor 10, a memory 20, and a display 30 (in a case where a display screen is connected or in an external case). Fig. 5 shows only some of the components of the smart television, but it is to be understood that not all of the shown components are required to be implemented, and that more or fewer components may be implemented instead.
The storage 20 may be an internal storage unit of the smart tv in some embodiments, for example, a hard disk or a memory of the smart tv. In other embodiments, the memory 20 may also be an external storage device of the Smart tv, such as a plug-in hard disk provided on the Smart tv, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and so on. Further, the memory 20 may also include both an internal storage unit and an external storage device of the smart tv. The memory 20 is used for storing application software installed in the smart television and various types of data, such as program codes for installing the smart television. The memory 20 may also be used to temporarily store data that has been output or is to be output. In an embodiment, the memory 20 stores a backlight adjustment-based image processing program 40, and the backlight adjustment-based image processing program 40 can be executed by the processor 10, so as to implement the backlight adjustment-based image processing method in the present application.
The processor 10 may be a Central Processing Unit (CPU), a microprocessor or other data Processing chip in some embodiments, and is used for executing program codes stored in the memory 20 or Processing data, such as executing the image Processing method based on backlight adjustment.
The display 30 may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, an OLED (Organic Light-Emitting Diode) touch panel, or the like in some embodiments. The display 30 is used for displaying information on the smart television and for displaying a visual user interface. The components 10-30 of the smart television communicate with each other via a system bus.
In an embodiment, when the processor 10 executes the image processing program 40 based on backlight adjustment in the memory 20, the following steps are implemented:
acquiring and playing a dolby visual field video source, analyzing attribute parameters of the dolby visual field video source through a driving module, and judging whether preset parameters for realizing global light control exist or not;
when the preset parameters exist, judging whether a preset switch is turned on, and mapping the preset parameters with a preset gray scale value when the preset switch is turned on;
and mapping the mapped gray scale data and the PWM dimming duty ratio, and setting a backlight value as the mapped PWM dimming duty ratio.
The acquiring and playing of the dolby view video source, analyzing the attribute parameters of the dolby view video source through the driving module, and judging whether the preset parameters for realizing global light control exist further comprises:
and when the preset parameters for realizing the global light control in the attribute parameters are separated, and the preset parameters do not exist, the backlight is not readjusted.
When the preset parameter exists, whether a preset switch is turned on or not is judged, and when the preset switch is turned on and turned on, the preset parameter and the preset gray scale value are mapped, further comprising:
and when the preset parameter exists and the preset switch is judged to be in the closed state, the backlight is not readjusted.
Wherein, the preset gray scale value is a 256-bit gray scale value.
The obtaining and playing of the dolby view video source is realized by analyzing the attribute parameters of the dolby view video source through the driving module, and judging whether the preset parameters for realizing global light control exist specifically comprises the following steps:
acquiring a dolby video source in a resource database through a player, and starting to play the dolby video source;
analyzing the Dewar chart video source to obtain attribute parameters through a driving module, and judging whether preset parameters for realizing global light control exist or not;
and when the preset parameters exist, separating the preset parameters from the attribute parameters.
When the preset parameter exists, whether a preset switch is turned on is judged, and when the preset switch is turned on, the method for mapping the preset parameter and the preset gray scale value further comprises the following steps:
a preset switch for judging whether the backlight parameters need to be readjusted is preset.
When the preset parameter exists, whether a preset switch is turned on is judged, and when the preset switch is turned on, mapping the preset parameter and a preset gray scale value specifically comprises the following steps:
judging whether the preset switch is in an on state or not after the preset parameter exists and is separated from the attribute parameter;
and when the preset switch is in an on state, performing first mapping processing on the preset parameters and the 256-bit gray scale values.
The mapping the mapped gray-scale data and the PWM dimming duty ratio and the setting the backlight value as the mapped PWM dimming duty ratio specifically includes:
carrying out second mapping processing on the 256-bit gray scale data subjected to the first mapping processing and the PWM dimming duty ratio;
and setting the backlight value as the PWM dimming duty ratio after the second mapping processing.
The present invention also provides a storage medium, wherein the storage medium stores an image processing program based on backlight adjustment, and the image processing program based on backlight adjustment realizes the steps of the image processing method based on backlight adjustment as described above when being executed by a processor.
In summary, the present invention provides an image processing method based on backlight adjustment, a smart television and a storage medium, where the method includes: acquiring and playing a dolby visual field video source, analyzing attribute parameters of the dolby visual field video source through a driving module, and judging whether preset parameters for realizing global light control exist or not; when the preset parameters exist, judging whether a preset switch is turned on, and mapping the preset parameters with a preset gray scale value when the preset switch is turned on; and mapping the mapped gray scale data and the PWM dimming duty ratio, and setting a backlight value as the mapped PWM dimming duty ratio. The invention ensures that the change of the backlight is smooth transition by establishing the relation between the Dolby View video source and the television backlight, controls the television backlight to change in real time according to the corresponding relation when the parameter of the Dolby View video source changes, realizes the effect of dynamically adjusting the backlight according to different pictures of a film source, and improves the playing effect of video images.
Of course, it will be understood by those skilled in the art that all or part of the processes of the methods of the above embodiments may be implemented by a computer program instructing relevant hardware (such as a processor, a controller, etc.), and the program may be stored in a computer readable storage medium, and when executed, the program may include the processes of the above method embodiments. The storage medium may be a memory, a magnetic disk, an optical disk, etc.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (8)
1. An image processing method based on backlight adjustment is characterized in that the image processing method based on backlight adjustment comprises the following steps:
acquiring and playing a dolby visual field video source, analyzing attribute parameters of the dolby visual field video source through a driving module, and judging whether preset parameters for realizing global light control exist or not;
the obtaining and playing of the dolby view video source is realized by analyzing the attribute parameters of the dolby view video source through the driving module, and judging whether the preset parameters for realizing global light control exist specifically comprises the following steps:
acquiring a dolby video source in a resource database through a player, and starting to play the dolby video source;
analyzing the Dewar chart video source to obtain attribute parameters through a driving module, and judging whether preset parameters for realizing global light control exist or not;
when the preset parameters exist, separating the preset parameters from the attribute parameters;
presetting a preset switch for judging whether the backlight parameters need to be readjusted or not;
when the preset parameters exist, judging whether a preset switch is turned on, and mapping the preset parameters with a preset gray scale value when the preset switch is turned on;
mapping the mapped gray scale data and the PWM dimming duty ratio, and setting a backlight value as the mapped PWM dimming duty ratio;
and establishing a relation between the Dolby View video source and the television backlight, ensuring that the change of the backlight is in smooth transition, controlling the television backlight to change in real time according to the corresponding relation when the parameter of the Dolby View video source changes, and dynamically adjusting the backlight according to different pictures of the film source.
2. The image processing method based on backlight adjustment according to claim 1, wherein the acquiring and playing the dolby view video source, analyzing the attribute parameters of the dolby view video source through a driving module, and determining whether the preset parameters for realizing global light control exist further comprises:
and when the preset parameters for realizing the global light control in the attribute parameters are separated, and the preset parameters do not exist, the backlight is not readjusted.
3. The method according to claim 1, wherein the determining whether a preset switch is turned on when the preset parameter exists, and mapping the preset parameter with a preset grayscale value when the preset switch turns on further comprises:
and when the preset parameter exists and the preset switch is judged to be in the closed state, the backlight is not readjusted.
4. The method according to claim 1, wherein the preset grayscale value is a 256-bit grayscale value.
5. The image processing method based on backlight adjustment according to claim 1, wherein when the preset parameter exists, determining whether a preset switch is turned on, and when the preset switch is turned on, mapping the preset parameter with a preset grayscale value specifically comprises:
judging whether the preset switch is in an on state or not after the preset parameter exists and is separated from the attribute parameter;
and when the preset switch is in an on state, performing first mapping processing on the preset parameters and the 256-bit gray scale values.
6. The image processing method based on backlight adjustment according to claim 5, wherein the mapping the mapped grayscale data with a PWM dimming duty cycle and setting the backlight value as the mapped PWM dimming duty cycle specifically comprises:
carrying out second mapping processing on the 256-bit gray scale data subjected to the first mapping processing and the PWM dimming duty ratio;
and setting the backlight value as the PWM dimming duty ratio after the second mapping processing.
7. An intelligent television, characterized in that the intelligent television comprises: memory, a processor and an image processing program based on backlight adjustment stored on the memory and executable on the processor, which when executed by the processor implements the steps of the image processing method based on backlight adjustment as claimed in any one of claims 1-6.
8. A storage medium storing an image processing program based on backlight adjustment, the image processing program based on backlight adjustment implementing the steps of the image processing method based on backlight adjustment according to any one of claims 1-6 when executed by a processor.
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| PCT/CN2019/102436 WO2020125049A1 (en) | 2018-12-21 | 2019-08-26 | Image processing method employing backlight adjustment, smart television, and storage medium |
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| CN105825834A (en) * | 2015-07-27 | 2016-08-03 | 维沃移动通信有限公司 | Terminal and backlight brightness adjustment method thereof |
| CN107293265A (en) * | 2017-06-12 | 2017-10-24 | 深圳Tcl新技术有限公司 | Display screen picture method of adjustment, display terminal and readable storage medium storing program for executing |
| CN107591131A (en) * | 2017-09-20 | 2018-01-16 | 青岛海信电器股份有限公司 | Backlight drive method and device |
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| CN105741792B (en) * | 2014-12-10 | 2018-08-14 | 青岛海信电器股份有限公司 | A kind of gray-scale intensity method of adjustment, device and 3D display equipment |
| CN107222702B (en) * | 2017-05-24 | 2020-01-31 | 四川长虹电器股份有限公司 | Dolby Vision HDR-based image quality debugging method |
| CN107465961B (en) * | 2017-07-17 | 2020-06-09 | 深圳创维－Rgb电子有限公司 | Peak brightness improving method, storage medium and smart television |
| CN109640155B (en) * | 2018-12-21 | 2021-05-18 | 深圳创维－Rgb电子有限公司 | Image processing method based on backlight adjustment, smart television and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105825834A (en) * | 2015-07-27 | 2016-08-03 | 维沃移动通信有限公司 | Terminal and backlight brightness adjustment method thereof |
| CN107293265A (en) * | 2017-06-12 | 2017-10-24 | 深圳Tcl新技术有限公司 | Display screen picture method of adjustment, display terminal and readable storage medium storing program for executing |
| CN107591131A (en) * | 2017-09-20 | 2018-01-16 | 青岛海信电器股份有限公司 | Backlight drive method and device |
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